Take a look at Caddock power film resistors MP series. 15w to 100w many at 1% very compact. Much smaller than big wire wounds like Vishay Dale and others. And only one hole to drill and mount on heat sink! Always looking for ways to shrink SOZ.

Do not know if these are preferred to wire wounds. But, maybe others have used them and can comment.

Mouser has them. But do not have the right values in stock for SOZ . www.mouser.com

Originally posted by gnomus Take a look at Caddock power film resistors MP series. 15w to 100w many at 1% very compact. Much smaller than big wire wounds like Vishay Dale and others. And only one hole to drill and mount on heat sink! Always looking for ways to shrink SOZ.

Do not know if these are preferred to wire wounds. But, maybe others have used them and can comment.

Mouser has them. But do not have the right values in stock for SOZ . www.mouser.com

You can actually make an SOZ out of a long length of Nichrome wire which would have to be wrapped between a few ceramic insulators to form the various resistors, The problem is how to attach the nichrome to itself where say two virtual resistors need to connect. I've thought of using clamps like speaker terminals. Or it would be better to do as the electric space heater people do and use ribbon nichrome and spotweld it together (somehow.....)